Home / 81,919.09-122,895.06-25,773.36

Finding the Fourth Proportional to 81,919.09, 122,895.06 and 25,773.36

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Solution

The fourth proportional to 81,919.09, 122,895.06 and 25,773.36 is: 38,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,919.09 : 122,895.06 = 25,773.36 : x
  2. Step 2: Convert to fraction form
    81,919.09/122,895.06 = 25,773.36/x
  3. Step 3: Cross multiply
    81,919.09x = 122,895.06 × 25,773.36
  4. Step 4: Simplify right side
    81,919.09x = 3,167,418,623.60
  5. Step 5: Solve for x
    x = 3,167,418,623.60/81,919.09
  6. Step 6: Final answer
    x = 38,665.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.